Chicago Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Chicago Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-5.437500000000001	-10.3		-0.10625000000000015	-5.4
	-5.73125	-5		-0.8687499999999996	-2.4
	-5.3187500000000005	-5.7		-0.16249999999999995	-1.4
	-6.043749999999999	-5.5		-0.35624999999999996	-1.3
	-6.95625	-1.9		-0.7749999999999998	0.6
	-6.75625	0.7		-2.5875	2.8
	-7.08125	0.6		-1.7374999999999996	2.5
	-6.65625	1.3		-0.4937499999999999	7.4
	-6.281250000000001	2.3		0.4562500000000001	12.5
	-5.35625	-1.2		1.2937500000000002	2.7
	-3.9	-4.8		2.5124999999999997	1.1
	-4.081249999999999	-1.7		0.9062500000000001	4.1
	-7.08125	0.2		-1.14375	5.6
	-7.075000000000001	-5.7		-2.20625	2.4
Jan.	-6.9	-8.8		-1.5062499999999999	-5.3
	-6.15625	-4.9		-0.5187500000000002	2.8
	-6.28125	-8.6		-0.40624999999999983	-1.6
	-6.0562499999999995	-11.3		-0.48124999999999984	-5.8
	-7.5	-13.6		-1.28125	-6.3
	-7.618749999999999	-13.8		-2.38125	-5.4
	-7.9312499999999995	-6.3		-2.9375	-2.3
	-6.856249999999999	-10.4		-0.7687500000000003	-4.2
	-6.05	-20		-1.0437499999999997	-10.8
	-6.081249999999999	-20.2		-0.18750000000000003	-11.3
	-5.46875	-12.3		-0.031250000000000125	-6.3
	-6.5875	-16.8		-1.19375	-10.5
	-6.5875	-13.9		-0.9437499999999996	-9.8
	-6.262499999999999	-16.1		-0.9437499999999998	-7.6
	-6.8812500000000005	-15.2		-0.8375	-8.8
	-6.9125	-13.7		-0.7312500000000001	-7.9
	-5.768749999999999	-14.1		-0.07499999999999982	-5.5
	-5.593749999999999	-12.9		0.12500000000000006	-3.7
	-6.200000000000001	-6.9		0.03125000000000017	-2.6
	-6.5	-8.2		-1.0875000000000004	-4.1
	-6.512499999999999	-8.2		0.13124999999999998	-4.2
	-6.656250000000001	-8.7		-1.9062499999999996	-1.7
	-6.618750000000001	-5.8		-0.17500000000000004	1.6
	-6.375	-11.5		0.28750000000000003	-4.5
	-7.600000000000001	-7.2		-1.4999999999999996	-3.6
	-6.481249999999999	-5.6		-1.7437500000000001	0.6
	-7.39375	-2.7		-1.83125	2.1
	-7.34375	-2.5		-1.2125000000000001	1.2
	-7.618749999999998	-6		-1.3437500000000002	0.5
	-8.681249999999999	-8.4		-1.09375	8
	-7.831250000000001	-4.1		-0.4999999999999999	2.4
Feb.	-6.55	-2.4		0.006249999999999922	4.2
	-5.5062500000000005	-2		-0.018750000000000107	5
	-6.55	1.5		-0.06249999999999989	6
	-6.300000000000001	6.1		1.4499999999999997	14.2
	-5.906250000000001	3.8		1.1375	8.8
	-5.200000000000001	1.4		3.2	8.4
	-3.0375	-2.3		2.9937499999999995	2.5
	-2.59375	-4.9		3.1	-1.5
	-3.725	-6.6		2.475	-1.8
	-4.1	-5.1		1.8125	1.4
	-4.962499999999999	-3.7		1.0062499999999996	2
	-4.987499999999999	-3.6		2.5	6.6
	-2.3249999999999997	0.5		4.14375	10.2
	-3.31875	-1.9		4.73125	5.5
	-3.4250000000000003	-3.2		4.012499999999999	-1
	-3.99375	-1.7		1.9187500000000002	5.1
	-4.1125	1.4		2.2874999999999996	2.7
	-3.4999999999999996	-1.1		3.43125	2.9
	-2.6937499999999996	2.4		3.7375	4.4
	-2.8187499999999996	3		4.762500000000001	16.7
	-1.8812499999999999	4.1		4.675	15.8
	-0.46875000000000006	1.6		6.24375	15
	0.6125	6.6		7.5375000000000005	17.8
	1.8812499999999999	3.9		6.831249999999999	13.6
	-0.16875000000000004	2.4		5.875	11.5
	-1.1624999999999999	-0.5		5.58125	6.2
	-0.23124999999999982	2.3		7.125000000000001	5.6
	1.3187499999999999	-1.4		8.09375	1.8
Mar.	0.875	1.7		7	12
	0.6999999999999997	-6.4		6.893749999999999	2.9
	0.5000000000000001	-8.5		8.03125	-2.3
	1.04375	-3.7		7.593750000000002	5.8
	0.5874999999999999	0.8		6.618750000000001	9.7
	1.0249999999999997	3.7		7.9125000000000005	12.3
	1.2499999999999998	3.6		8.83125	9.8
	1.3	1.8		6.356249999999999	12.9
	1.6625	-0.6		7.1875	1
	1.6125	-0.7		6.5	7.4
	0.7999999999999999	3.9		5.356249999999999	14.3
	0.3687500000000001	5.9		6.41875	18.1
	0.9437499999999999	-0.4		7.1187499999999995	1.3
	1.3250000000000002	-1.2		8.018749999999999	7.8
	1.85	3.4		8.225	10.6
	1.9875000000000003	8.8		9.5625	17.2
	2.9562500000000003	11		10.025000000000002	17.3
	1.4312500000000001	3.1		8.04375	4.9
	2.69375	4		9.531249999999998	22.2
	3.0374999999999996	4.8		9.59375	10.8
	3.1187499999999995	4		11.200000000000003	13.5
	3.33125	1.8		9.36875	12.6
	3.35	1		10.037500000000001	9.2
	3.3499999999999996	-0.7		8.987499999999999	3.9
	3.85	0.8		9.93125	24.1
	4.299999999999999	6.3		12.2875	24.6
	4.58125	5.1		11.46875	9.8
	4.449999999999999	1.8		11.724999999999998	13.2
	5.2562500000000005	9.4		12.793749999999998	29.5
	5.975	16.4		12.85	27.7
	4.59375	13.2		12.212499999999999	28.9
Apr.	5.799999999999999	13		12.243750000000002	24.9
	4.69375	8.8		11.4125	20.5
	4.2375	8.2		11.48125	31.2
	4.75625	3.3		12.018749999999999	10.1
	4.65	1.3		11.668749999999998	10.4
	5.325	0.5		11.85	14.7
	4.68125	5.9		12.643750000000002	26
	4.85	8.8		12.0125	19.6
	5.65	7.9		13.09375	28.2
	6.03125	13.8		12.662499999999998	23.2
	5.793749999999999	6.6		11.19375	10.8
	5.6875	6.4		12.9875	12.3
	5.09375	9.8		12.174999999999999	20.1
	5.7875	9.5		12.331249999999999	18.1
	6.825	6.3		13.51875	12.9
	7.393750000000001	2.2		13.3875	14.2
	8.262500000000001	3.7		15.475000000000003	9.8
	8.1625	0.1		14.393749999999999	14.4
	8.04375	5.1		14.46875	22.1
	8.30625	8.6		14.806250000000002	29.5
	7.706250000000001	9.9		14.64375	18.6
	7.775	5.7		14.05	14.7
	8.40625	2.1		16.13125	15.9
	9.068750000000001	4.9		15.799999999999997	17.7
	8.69375	10.3		16.0875	23.7
	8.14375	7.1		15.312500000000002	17.4
	9.293750000000001	7.6		15.65	13.6
	9.675	4.8		15.825	28.9
	9.13125	8.4		17.406249999999996	15.5
	9.56875	4.8		17.125	18.8
May	9.681249999999999	9.1		16.7875	22.1
	10.737500000000002	16.6		18.637499999999996	31.7
	10.2625	17		16.4375	33.5
	9.925000000000002	19.6		17.881249999999998	31.1
	10.65	13.7		18.14375	30.1
	11.175	9.2		18.23125	11.6
	12.281250000000002	9		19.212500000000002	14.9
	11.98125	10		19.275000000000002	18.5
	12.075	12.2		18.912499999999998	19
	11.543749999999998	12.4		19.499999999999996	21.7
	13.9875	12.3		21.525000000000002	30.4
	13.73125	14.3		20.268749999999997	18.3
	13.7	14.3		19.53125	25.9
	13.875	14.1		20.21875	21.3
	14.88125	12.2		21.4375	26.7
	15.0125	14.1		22.087500000000002	22.9
	14.725000000000001	13.1		21.6375	23.3
	13.225	13.5		20.69375	21.4
	13.6875	13.8		20.075	24
	14.475	11.5		22.275	27.5
	15.243750000000002	15.1		23.418750000000003	31.9
	15.08125	21		21.7625	27.2
	14.525	18.6		21.037499999999998	25.7
	14.700000000000001	18.3		20.656249999999996	27.6
	14.631249999999998	18.6		20.95	29.5
	14.862499999999999	20.7		23.237499999999997	32.6
	15.856250000000001	19.5		23.431250000000002	36.5
	16.09375	19.1		23.73125	27.2
	15.89375	15.6		23.075	26.6
	15.143749999999999	16.4		22.012499999999996	31.1
	15.843750000000002	13.5		22.65625	21.3
Jun.	16.6125	11.2		23.825	27.4
	16.9875	14.5		23.806250000000002	26.9
	17.56875	13		25.95625	19.8
	17.8125	15.2		25.287500000000005	23.7
	17.41875	13.6		24.556250000000002	26.6
	17.749999999999996	15		25.812499999999996	26
	18.481250000000003	14.8		26.099999999999998	23.9
	18.7125	14.9		25.4	20.7
	18.84375	12.3		25.537499999999998	22.6
	18.09375	13.7		24.531249999999996	25.4
	17.8375	16.7		24.374999999999996	26.1
	18.224999999999998	15.8		24.724999999999998	23.4
	18.13125	15.5		24.968749999999993	23.7
	18.4	17.2		25.66875	27.8
	19.2375	22.7		25.34375	35.1
	19.78125	24.4		26.137500000000003	37.5
	18.249999999999996	24.5		24.656249999999996	36.4
	18.04375	24.6		23.9625	36.3
	17.925000000000004	21.1		25.143750000000004	33.5
	19.700000000000003	19.8		27.6	27.9
	20.8625	19		27.925000000000004	22.6
	20.143749999999997	18.7		26.837500000000002	24.9
	19.75625	17.4		26.531250000000004	27.4
	19.75625	18.3		25.44375	33.1
	19.368750000000002	21.7		25.98125	31.7
	20.000000000000004	21.7		26.150000000000002	28.3
	19.5625	19.8		26.031250000000004	27.4
	20.21875	21.7		26.787500000000005	30
	20.081249999999997	18.5		26.237500000000008	33.1
	20.04375	21.8		26.4875	35.8
Jul.	20.531249999999996	23.9		26.799999999999997	36.6
	20.412500000000005	23.7		26.231250000000003	32.4
	20.20625	23.1		26.3375	33.7
	20.78125	21		27.412499999999998	32
	21.431250000000002	20.1		27.8	28
	21.243749999999995	18		27.737500000000004	31.5
	20.731250000000003	19.7		26.45625	32.4
	20.706249999999997	16.2		27.437500000000004	24.5
	20.63125	14.1		27.7875	26.8
	21.050000000000004	15.7		26.925	27.3
	20.249999999999996	16.5		26.275	31
	20.387499999999996	21.4		27.05625	32.6
	20.53125	22.3		27.28125	30.3
	20.5125	17.7		26.86875	23.6
	20.075000000000003	16.9		25.74375	25.5
	19.85625	15.8		25.49375	30.5
	19.675	18.7		26.037499999999998	30.1
	20.04375	20.1		26.2375	24.3
	20.33125	19.6		27.106250000000003	23
	20.443750000000005	17		26.6375	26.1
	20.400000000000002	18		25.762499999999996	31.7
	20.2625	20.3		26.499999999999996	30.8
	20.287499999999998	18.5		25.76875	24.8
	19.937500000000004	20.3		25.943749999999998	32.1
	19.94375	20.9		26.59375	29.1
	20.0875	17.7		26.59375	33.9
	19.9875	21.7		26.3125	27.4
	20.462500000000002	21.9		26.287499999999998	28.8
	20.21875	20.5		26.037500000000005	29.3
	19.44375	19.1		25.400000000000002	28.2
	19.293749999999996	20.8		24.80625	26.9
Aug.	19.3375		22.1	25.16875		25.4
	19.549999999999997		22.1	26.443749999999998		28.7
	20.08125		21.2	25.487500000000004		25.6
	19.65		19.4	25.70625		28.8
	19.874999999999996		20.5	26.225		25.4
	20.068749999999998		19.7	25.95625		25
	19.562500000000004		18.1	25.5625		21.5
	19.01875		18.3	24.706249999999997		25.7
	18.6		18.9	25.83125		26.1
	18.837500000000002		19.1	26.474999999999998		26.7
	18.975		19.2	25.925		25.6
	19.7		19.7	25.9375		25.8
	19.775000000000002		19.7	26.543750000000003		26.2
	20.125		19.8	26.306249999999995		25.4
	20.03125		19.4	26.262500000000003		25.5
	19.400000000000002		19.1	24.793750000000003		24.6
	19.331249999999997		19	25.731249999999996		25.1
	19.856250000000003		19.2	25.924999999999997		24.8
	19.731250000000003		19.3	25.437499999999996		25.5
	18.94375		18.5	26.01875		26
	18.131249999999998		18.1	24.650000000000002		24.7
	17.493750000000002		18	24.187499999999993		24.6
	17.9875		17.8	24.4875		23.8
	17.6375		17.1	24.000000000000004		23.4
	16.78125		16.4	22.475		22
	16.44375		16.9	22.562499999999996		22.8
	17.06875		16.9	24.11875		24
	16.65		16.6	22.931250000000002		23.3
	16.04375		16.4	22.525		22.7
	16.331249999999997		16.4	22.474999999999998		22.3
	15.85625		16	23.068749999999998		23
Sep.	16.6125			22.618749999999995
	16.58125			23.268749999999997
	16.86875			24.1375
	17.125			22.675
	16.4625			21.85625
	16.668750000000003			24.406249999999996
	17.0375			23.1
	15.95			21.49375
	15.593750000000002			21.5875
	15.018749999999999			21.6125
	15.499999999999998			21.18125
	14.931249999999999			21.99375
	14.9			21.037499999999998
	14.550000000000002			20.05625
	13.587500000000002			19.44375
	13.931249999999999			19.456250000000004
	14.431249999999999			19.900000000000002
	14.5625			19.799999999999997
	13.63125			20.0125
	13.249999999999998			19.218749999999996
	13.399999999999999			19.9
	12.918750000000001			19.806249999999995
	12.481250000000001			18.675
	11.893749999999999			19.05
	11.831249999999999			19.456249999999997
	12.231249999999998			19.40625
	11.762500000000001			18.61875
	11.73125			18.19375
	10.725000000000001			16.45
	10.25625			16.15
Oct.	9.525			15.88125
	8.662500000000001			14.31875
	8.275			14.268749999999999
	8.393749999999999			15.98125
	8.80625			15.58125
	8.78125			15.98125
	8.44375			15.506250000000001
	8.49375			14.656249999999998
	8.98125			15.387499999999998
	9.49375			15.587500000000002
	8.937499999999998			14.212499999999999
	8.525			14.018750000000002
	7.362500000000001			12.656250000000004
	6.343749999999999			10.64375
	5.737500000000001			11.26875
	7.24375			12.700000000000001
	5.943750000000001			10.45
	4.83125			11.275
	5.83125			11.968750000000002
	5.775			12.218750000000002
	7.7125			12.637500000000001
	6.9312499999999995			12.65
	6.556250000000001			13.4
	5.206249999999999			10.606250000000001
	5.206250000000001			10.862499999999999
	4.925			11.718750000000002
	5			10.431249999999999
	3.4375			11.343750000000004
	2.2875000000000005			7.3125
	1.3812499999999999			7.0125
	1.53125			7.312500000000001
Nov.	2.3187499999999996			8.343750000000002
	3.0000000000000004			8.15625
	2.68125			8.15625
	1.68125			6.7
	1.0625			7.15
	2.08125			7.550000000000002
	1.9999999999999996			7.531250000000001
	0.29375			6.1
	1.16875			6.9312499999999995
	1.2625000000000002			7.050000000000001
	0.65625			6.20625
	0.14375			5.731250000000001
	-1.1875			4.449999999999999
	-1.2312500000000002			3.6624999999999996
	0.04999999999999993			5.6312500000000005
	0.23124999999999984			6.08125
	-0.21249999999999997			4.381250000000001
	0.012500000000000178			4.9625
	-0.33125000000000004			4.675
	0.19999999999999973			5.3187500000000005
	-0.7749999999999999			4.5375000000000005
	-2.3625000000000003			2.04375
	-3.1875			1.1375
	-1.78125			3.025
	-1.8062500000000006			3.3375
	-2.1875			2.70625
	-2.30625			2.85
	-2.8499999999999996			2.875
	-2.3125			3.0125
	-2.3625			3.38125
Dec.	-2.23125			3.4625
	-1.7124999999999997			3.0749999999999997
	-2.3312499999999994			2.1
	-3.875			0.7749999999999999
	-3.8875			1.9250000000000003
	-2.79375			2.4625000000000004
	-0.8			3.64375
	-2.0624999999999996			2.7375000000000003
	-2.9062500000000004			2.3062499999999995
	-2.5			2.80625
	-1.7499999999999998			2.39375
	-1.9437499999999996			2.50625
	-2.2			3.825
	-2.5625			2.78125
	-2.2437499999999995			3.33125
	-3.7749999999999995			1.3
	-3.9266666666666667			0.52

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

38°C

Highest Temp

30 Jun. 26

-20°C

Lowest Temp

24 Jan. 26

Seasonal Breakdown

Hottest MonthJuly30.23°C

Coldest MonthJanuary-8.28°C

Wettest MonthMarch6.75mm

Windiest MonthJanuary26.11km/h

Chicago Climate Change InsightsSee how climate patterns are evolving over time. Temperature shifts, rainfall trends, and extreme events—all in one place.

Weather City Ranking GloballyExplore Real time of the world’s hottest & Coldest Cities based on current temperature data.

Frequently Asked Questions

1. What is the hottest month in Chicago historically?

July is historically Chicago's hottest month, with average maximum temperatures around 27°C. During peak heatwave events, the highest recorded temperatures have reached 38°C on 2026-06-30.

2. What is the coldest month in Chicago historically?

January is Chicago's coldest month, with average minimum temperatures around -6°C. The all-time record low of -30°C was recorded on 2019-01-31.

3. What is the average annual rainfall in Chicago over the past 17 years?

Chicago's average annual rainfall is approximately 1213.5mm, based on records spanning 17 years.

4. How many rainy days does Chicago experience on average per year?

Chicago historically records approximately 180.7 rainy days per year. July has the highest number of rain days at an average of 17.8 days.

5. What is the all-time highest temperature ever recorded in Chicago?

The all-time highest temperature recorded in Chicago is 38°C on 2026-06-30.

6. What is the all-time lowest temperature ever recorded in Chicago?

The all-time lowest temperature recorded in Chicago is -30°C on 2019-01-31.

7. What is the windiest time of year in Chicago historically?

Chicago experiences its strongest winds during November. The historic gust record of 60.6 kph was recorded on 2011-02-02.

8. What is the highest and lowest humidity in Chicago during a year?

Usually, Chicago's humidity peaks in January at around 80.7% and drops to its lowest in October at approximately 69.1%.

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Chicago Historic Weather Records
Analyse hottest, coldest, windiest & wettest days